Sickle-drive for harvesters.



H. H. KRYGER. SI'GKLB DRIVE FOR HARVESTERS. APPLICATION FILED MAR. 31,1906.

Patented June 15,1909.

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H. H. KRYGER.

. SIGKLB DRIVE FOR HARVESTERS.

APPLIoATIoN FILED 111.13.31, 1906.

925,352. Patented June 15, 1909.

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UNTTEB STATES PATENT FFTQ.

HENRY 1I. KRYGER, OF MINNEAPOLIS, MINNESOTA,

SICKLE-DRIVE FOR HARVESTERS To all whom it may concern.'

Be it known that l, HENRY H. KRYGER, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful v lmprovements inSickle- Drives for Harvcsters, and T do hereby declare the following` tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to harvesters and other grain or grass cuttingmachines, and has for its special object to provide an improved sickledrive therefor.

To the above end the invention consists in the novel devices andcombinations of devices hereinafter' described and defined in theclaims.

ln the aecomp anying drawings which illustrate the invention, likecharacters indicate like parts tlu'oughout the several views.

li eferring to the drawings, Figure 1 is a plan view with seine partsremoved showing a harvester and illustrating my improved sickle driveapplied thereto. Fig. 2 is a detail in plan showing a portion of thesickle operating lever and cani for actuating the saine. Fig. 3 is asection taken on the line :r3 rl of Fig. 2, some parts being brokenaway. Fig. 4 is a view corresponding to Fig. 1, but illustrating aslightly modified arrangement of the sickle drive, some parts of theharvester frame being broken away. Fig. 5 is a plan view correspondingto Fig. 1, but illustrating a still further modification of the sickledrive. Fig. 5 is a plan view of the parts shown in Fig. 7. Fig. 7 is aplan view with some parts removed illustrating a still furthermodification of the sickle drive. Fig. 5% is a face elevation of the camused in Figs. G and 7. Fig. Q is a detail in plan showing a bracket forsupporting the sickle operating lever. Fig. is a bolt for adjustablyconnecting the lever to the bracket shown in Fig. i). Figs. 11 and 12are details in plan showing the sickle operating lever and associatedparts, and Fig. 13 is a detail view in elevation showing the adjustablefulc'rum connection between the lever and bracket shown in Figs. 9 and1]..

1 indicates the frame, 2 the traction wheel (frequently termed the bullwheel), and 3 the grain wheel of a harvester of the usual construction.The front bar of the frame 1 is utilized as a linger bar, and thefingers 4 are Specification of Letters Patent.

Application filed March 31, 1906.

Patented Jv'une 15, 1909.

Serial No. 309,065.

shown applied thereto. The sickle 5 works in suitable seats afforded bythe several fingers 4. So far as this invention is concerned the sicklebar 5 and fingers 4.- may be of'any suitable eonstruction., but inpractice l would prefer to use the novel sickle bar and fingersdisclosed and claimed in a companion application filed by me of evendate herewith, and entitled Cutting mechanism for harvesters andsimilar' machines.

life will now consider particularly the construction illustrated inFigs. 1, 2, 3, 9, 10, 11 and 13. A sick e-opcrating lever 6 of the firstclass is pivotally connected or fulcrumed to a suitable support, such asa bracket 7, that is rigidly secured to the front bar of the frame 1.The forward and short end of this lever 6 is connected to theintermediate portion of the sickle 5. As shown in Fig. A11, thisconnection to the sickle is made by projecting the end of said leverbetween rollers 8 on the sickle 5. It may, however, be done as shown inFig. 12, by providing the end of said lever with a crotch 9 arranged toembrace a single roller 8 on the sickle. As shown, the lever 6 isadjustably fulerumed to the bracket 7, and to this end is provided withlongitudinally spaced lugs 10 and a slot 11. fulcrum block 1.2 works inthe slot 11, and is adjustably secured between the lugs 10, by opposingset-screws .13 that work.

through said lugs. This fulcrum block 12 is pivotally mounted on a stud14 that is supported by and secured to said bracket 7. As shown, thebolt 141 projects through a slot in. the bracket 7, and is adapted to beclamped thereto by a nut 15 that draws a collar 16 of said bolt againstthe top of said bracket. This makes the bolt 14 adjustable from thefront toward the rear ofthe machine, and vice versa. At its rear end thelever 6 is provided with a roller 17 that works in the peripheral camgroove 18 of a cam 19, which cam 19 is carried by a shaft 20 mounted insuitable bearings formed in a case-like support 21, which in turn isrigidly secured to the rear bar of the harvester frame 1. ln the innerflanged portieri of the casing 21 is a longitudinal slot 22, in whichfreely reciproeates the slide 23. The rear end of the lever 6 worksfreely through a slot in the slide 23, and is connected thereto by aslot and pin coupling 24. The flanged portion of the casing 21 isnotched or cut away at 25, to afford clearance for the rear end of thelever 6, when it is vbrated, by the cam 19. The slide 23 acts as a crosshead or guide for the long rear end of the lever 6. The casing 21 ispreferably formed with a detachable upper section 21a, which whenapplied in working` position, as shown in Fig. 3, holds the slide 23 andthe cam 19 and the shaft 2O in working position. The traction or drivewheel 2 carries a large driving sprocket 26. A sprocket chain 27 runsover this sprocket 26 and over a small sprocket 28 carried by a shaft29, which shaft is mounted in a suitable bearing` 30 in the rear portionof the frame 1, and is, as shown, connected to the cam shaft 2() by aninterlocking coupling 31 of the usual or any suitable construction.

INith the construction described it is evident that under the forwardmovement of the machine rotary motion will be irriparted to the cam 1Q,and a vibratory motion will be imparted by said cam to the lever 6, andthrough said lever 6 to the sickle. The lever 6 is fulcrumed or pivotedat a point which is much nearer to its forward than to its rearward end,the arrangement being preferably such that the power transmitted throughsaid lever is multiplied about three times. By this arrangement greatcutting power is obtained.

In the construction illustrated in Fig. 4

the lever 6 is fulcrumed on a support 7a that is located outward of thetraction wheel 2 or, in other words, on the right hand side of saidtraction wheel, direction being taken with respect to a driver seated onthe machine, The connection between the forward end of said lever 6 andthe adjacent end of the sickle is here made through a short pitman 32.The cam for operating1 the lever 6 is the same as that shown in Fig. 1,but its shaft 20 is in this instance mounted in suitable bearings at therear of the traction wheel, and the s rocket 28 in the direction appliedto said s aft 20.

In the construction illustrated in Fig. 5, the traction wheel 2 carriesa large bevel gear 33 that meshes with a bevel pinion 34 carried by ashaft 35 mounted in suitable bearings in the frame 1, and provided atits rear end with a crank disk 36, the crank pin of which disk isdirectly connected to the rear end of the lever 6 by a pitman 37.

Figs. 6 and 7 illustrate a construction in which the rear end of thelever 6 works in an eccentric cam groove 38 of a profile camBQ, whichcam is carried by a shaft 40 that is suitably mounted in the casing 21.As shown, this shaft 40 carries a sprocket 41, and is connected to ashort counter-shaft 42 by miter gears 43. Also as shown, the shaft 42carries a sprocket 44. With this arrangement the shaft 40 and cam 39 maybe driven by a sprocket chain arranged. to run over either of the twosprockets 41 or 44.

The improved sickle drive above described is of small cost, has fewparts to get out of order, and is eflicient for the purposes had inview. This improved sickle drive, which is shown as applied to aharvester, is of course adapted for application to a mower. Thearrangement of the drive shown in Fig. 4 is probably the bestarrangement for a mower.

I claim as my invention:

1.. In a machine of the kind described, the combination with a lingerequipped bar and a sickle, of a lever connected to said sickle at oneend, a cross head or slide loosely connected to the other end of saidlever, a bearing for said cross head or slide constructed to entirelyinelose said cross head or slide, provided with a slot permittingvibratory movements of said lever, a vcam operative on the rear end ofsaid lever adjacent to said cross head, and connections between thetraction wheel of the machine and the said "cam, whereby the latter willbe rotated under the advance movement of the machine, substantially asdescribed.

2. In a machine ofltlleA kind described, the combination with a tractionwheel, a iingerequipped bar and sicklefof a lever 6 extending from frontto rear'; of` the machine and pivoted near its forward end, the forwardend of said lever being connected to said sickle, a casing secured tothe rear portion of the machine frame and having a grooved cross headseat, a cross head or slide working in the said grooved seat of `saidcasing and loosely connected to they long rear end of said lever, a cammounted in; said casing and operating on the rear end offy 'id lever,and a driving connection from saigd traction wheel to said cam,wherebysaid cam will be rotated, said lever vibrated, and said sickle will bereciprocated,.iii1`der the advance movement of the machine;substantially as described.

3. In ainachine of the kind described, the combination with a tractionwheel, a fingerequipped bar` and a sickle, of a lever of the iirst classintermediately fulcrumed to the frame of said machine and having itsfront end pivotally connected to said sickle, a cam having in its facean eccentrically located groove that is a true circle and in which therear end of said lever is arranged to work, and means for driving saidcam from said traction wheel, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY H. KRYGER.

Witnesses:

MAME HonL, F. D. MERCHANT.

